Update to newer CI environment.

The current one causes build failures since recent pytest versions are incompatble with
Python 3.5.

.travis.yml

@@ -1,21 +1,21 @@
-sudo: required
-dist: xenial
+dist: focal
+sudo: enabled
 
 language:
     - c
 addons:
   apt:
-    sources:
-    - ubuntu-toolchain-r-test
     packages:
     - valgrind
-    - clang
     - gcc
-    - gcc-6
+    - clang
     - python-docutils
     - python3-pip
     - python3-setuptools
     - ninja-build
+    - meson
+    - python3-pytest
+    - libglib2.0-dev
 install: test/travis-install.sh
 script: test/travis-build.sh
 

test/travis-build.sh

@@ -12,7 +12,7 @@ export CC
 TEST_CMD="python3 -m pytest --maxfail=99 test/"
 
 # Standard build with Valgrind
-for CC in gcc gcc-6 clang; do
+for CC in gcc clang; do
     mkdir build-${CC}; cd build-${CC}
     if [ ${CC} == 'gcc-6' ]; then
         build_opts='-D b_lundef=false'

test/travis-install.sh

@@ -2,19 +2,12 @@
 
 set -e
 
-# Meson 0.45 requires Python 3.5 or newer
-sudo python3 -m pip install pytest meson==0.44
-valgrind --version
-ninja --version
-meson --version
-
 # Install fuse
 wget https://github.com/libfuse/libfuse/archive/master.zip
 unzip master.zip
 cd libfuse-master
 mkdir build
 cd build
-export CC=gcc-6
 meson ..
 ninja
 sudo ninja install